Glass-cutter.



B. L. ALTIG.

GLASS. CUTTER.

APPLIGATION FILED r1113, 18, 1914.

1,109,274, Patented Sept. 1, 1914.

THE NORRIS PETERS 60.. PHOTO-LITHQ, WASHINGTON. D. C

. UNITED EN OFFICE;

BENJAMIrT rirrc, or RoANoKEQvmGIivIn.

' {GLASS-CUTTER.

Specification of Letters Patent.

To all whom it may concern:

Be it known that I,BENJAMIN L. AL'rro, a citizen of the United' St'ates, residing at Roanoke, in the county of Roanoke and State of Virginia, have invented certain new and useful Improvements in Glass-Gutters, of which the following is a specification.

The object of this invention is to provide a convenient means for cutting circular or other plane figures from sheets of glass or other material, its most general application being to the art of cutting glass disks.

In the drawings, Figure 1 is a plan view of the cutter of my invention and Fig. 2 a side elevational view, partly in section, of the same.

In glass cutters asnow used for this purpose a similar device isused except that the pivot or post is held in place on the glass by pressure of. the hand, the base of the pivot usually being supplied with a rubber suction cap.

A description of my invention follows in.

which reference is made to the accompanying drawings, like numbers representing the same parts wherever they occur. 1 c

1 represents a glass cutters table and 2 a sheetof glass lyingthereon. To the underside of the table 2 I aflix the winding of an electro-magnet 3, the core 4 of the same extending upward through the table, the

face of the core being adjacent to the underside of the plate of glass. The winding of this electro-magnet is connected to any suitable electric circuit, a switch being provided in the circuit. o

The glass cutter 5 is mounted in any suitable holder 6 and the holder is clamped to a radius bar or cutter bar 7 by means of a movable clamp 8.

The cutter bar 7 is preferably graduated so that the disks may be readily cut to any desired diameter. The cutter bar 7 is pivoted at its inner end 9 on a vertical pintle 10 which pintle is rigidly secured to and forms a part of the center post 11. The upper end of the pintle 10 is threaded to accommodate a nut 12.

The space between the shoulder 13 of the post 11 and the bottom of the nut 12 1s 14 of the cutter bar 7. This allows the the center postby hand.

As previously stated, my invention" might lifting the post 11.

The post ll is made of a metal such as iron or steel that will be attracted by a over the core 4 thepost or armature 11 will be drawn firmly down against the glass.

vThe cutter bar may then be freely revolved of holding down and without the necessity also be used for cutting other flat shapes such as ellipses and the likeand may be used for cutting glass or similar materials.

Having thus described my invention what I claim as new and desire to secure by Letters Patent isz cutter to be raised off the glass without The core 4: being magnetized the magnetic lines of force will flow through the glass 2 and when the cutter is placed v H p Patented Sept. 1, 1914. ApplicatibhfiidFebruary13,1314.."Seria1Nol819,424.'

1. In a glass cutting arrangement the combination of a table adapted to support a plate of glass, a magnet having the coil and core thereof mounted in said table, the

face of said core being adjacent to the under side of the plate of glass,-a post disposed I on the upper side of the plate of glass and being held against the same by the magnetic.

attraction, a portion of said post forming a vertical pintle, a cutter bar rotatably mounted on said pintle, and a glass cutter secured to said cutter bar, substantially as described.

2. In a glass cutting arrangement the 7 combination of a table adapted to support a plate of glass, a magnet having the coil and core thereof mounted in said table, the

face of said core being adjacent to'the under side of the plate of glass, a post disposed on the upper side of the plate of glass and a being held against the same by the magnetic attraction, a cutter bar rotatably mounted on said post, a glass cutter secured to said cutter bar, and friction inserts in thebase, of said post, substantially as described.

3. In a glass cutting arrangement the combination of a table adapted to, support a plate of glass, a magnethaving the coil and core thereof mounted in said table, the face of said core beingadjacent to the under side of the ,plate of glass, a post disposed In testimony whereof I affix my signature on the upper side of the plate .of glass, and i1} presence-of two Witnesses.

being held a ainst the same by the ma 'iietic l attraction, a cutter bar ,rotatably seoui ed to a BENJAMIN ALTIC' said post, and a glass cutter movably se- Witnesses: cured to said cutter bar, substantially as; VICTOR FREDERIKSEN,

described. M A a EDWIN W. ROBERTS.

Copies of this patent may be Obt ned the Commissioner of Patents,

Washin gtoml). G. 

